new to machine work, need some help

[jeremy maronpot]

I need to refine the edges of some water jet cut circles. The material is 1/8 inch thick brass, 1 5/8 inch in diameter. The water jet cut is not perfectly true, plus it is textured. The problem is I cant have a center hole in these pieces and I dont know how to hold them in a machine without one. Someone suggested that I epoxy the disks onto a piece of round stock which I can chuck up in a lathe. Any thoughts???